About Us

Everything we do is to help clients make informed decisions to be a more profitable business.

Mercury Accounting is a family run business with strong ethical values and expertise in a wide range of accounting and taxation matters.

Building on over 20 years of experience, we are passionate about making finance for businesses easy. By maintaining regular communication and the use of cloud-based accounting software that  provides real time information we will be here with you every step of the way.

Online Accounting Services

Our Approch


Our members are regulated by AAT which ensures that high standards are maintained at all time.


Our team constist of friendly & approachable staff that love to get to know and understand their clients.


We look to gain full understanding of your business which enables us offer the best advice tailored to your needs.


We are committed to meeting deadlines and give you up to date and advice as and when you need it.


We work with a wide range of businesses from medical cosmetics to charities, construction, events, marketing, technology & more. No business is too large or too small for us to support.

Emma Rees

Emma Rees

Founder & Managing Director

Building on 20 years of experience in many different industries, whilst in the 2020 Covid lockdown I decided to start on my own as a sole-trader trading under the name of Your Girl Friday.  I noticed that a lot of the clients coming on board were either not happy with their accountant or had no knowledge on what accounting tasks they needed to do to run their business.  With the rapid growth of my business as a sole trader, the business quickly changed to become a limited company, then rebranded to what is now Mercury Accounting & Fianance. I am AAT qualified with an Accountant Licence, a Certified Xero Advisor, process driven and confident that I can help you grow your business!

Our Belief

We believe that every business, no matter the size or scale deserves simple and effective finances.

Our Focus

Releasing you from your pain points, we aim to give you the specialist support that you need to run your business efficiently and effectively.


Customer Satisfaction

Work with us!

Mercury Accounting & Finance

1 Wern Road, Garnant, Ammanford, SA18 1LN